Sensitive Spectrophotometric Determination of Atenolol in Pharmaceutical Formulations Using Bromate-Bromide Mixture as an Eco-Friendly Brominating Agent
Table 3
Evaluation of intraday and interday precision and accuracy.
Method
ATN taken (μg/mL)
Intraday ()
Interday ()
ATN (μg/mL )
%
%
ATN (μg/mL )
%
%
Method A
4.00
4.14
1.49
1.71
4.09
1.86
2.25
8.00
8.12
0.75
1.56
8.16
1.34
2.00
12.00
4.0
0.67
1.04
12.31
1.28
2.58
Method B
8.00
8.22
1.74
2.69
8.19
2.14
2.38
16.00
16.25
1.06
1.58
16.44
2.08
2.75
24.00
24.63
0.56
2.62
24.85
1.72
3.54
Method C
2.00
1.99
1.64
0.46
2.05
2.14
2.50
4.00
4.09
2.09
2.44
4.14
2.56
3.50
6.00
6.07
1.47
1.09
6.16
2.63
2.67
aMean value of five determinations; brelative standard deviation (%); crelative error (%).
